Pipe jacking working well structure supported by steel sheet piles

Abstract

The utility model relates to a pipe-jacking working well structure supported by steel sheet piles, which comprises the steel sheet piles arranged on the peripheral side wall of a pipe-jacking working well in a surrounding manner, a reinforced concrete top beam is arranged at the top of each steel sheet pile, reinforced concrete plate supports are respectively arranged at four corners formed by the reinforced concrete top beams, and a pipe-jacking rear backrest wall body is arranged on the inner side wall of each steel sheet pile. The pipe jacking machine is tightly attached to the pipe jacking rear backrest wall, the driving end of the pipe jacking machine is connected with a to-be-jacked pipeline arranged in the pipe jacking working well, and the pipe jacking machine can jack the to-be-jacked pipeline into the side wall of the pipe jacking working well. The pipe-jacking working well structure supported by the steel sheet piles is high in construction speed and saves engineering cost, the tops of the steel sheet piles are connected through the reinforced concrete top beams, the overall stability of an enclosure structure is improved, the reinforced concrete plate supports are adopted for replacing traditional steel supports, the supports are prevented from falling off, construction safety is guaranteed, and construction efficiency is improved. The steel sheet piles are arranged in a high-low staggered mode, the steel bars are prevented from directly penetrating through the steel sheet piles, and binding operation of the steel bars of the reinforced concrete top beam is facilitated.

Description

TECHNICAL FIELD

[0001] The utility model relates to underground structure construction technical field especially relates to a steel sheet pile support's pipe jacking working well structure. BACKGROUND

[0002] When the urban underground pipeline adopts the pipe jacking construction, generally, the pipe jacking working well is constructed first.The traditional method of pipe jacking working well often adopts the sinking well section sinking, excavates the soil body in sections to the design elevation, then implements the pipe jacking operation.But the sinking well of pipe jacking working well is generally the reinforced concrete structure, needs the section binding of steel bar and the pouring of concrete on the ground and the maintenance, the construction period is longer and the cost is higher, when the geological condition is poor, the surrounding environment is complex, the sinking well sinking construction is not easy to control, and the safety hidden danger is easy to cause.Especially when the excavation depth required by the pipe jacking working well is not big, the disadvantage of the traditional sinking well construction mode is more obvious. SUMMARY

[0003] The utility model solves the technical problem that the prior art lacks, provides a steel sheet pile support's pipe jacking working well structure.

[0004] The utility model discloses a steel sheet pile support's pipe jacking working well structure, including the steel sheet pile that sets up in the four around sides of pipe jacking working well, the top of steel sheet pile sets up reinforced concrete crown beam, four corners formed by reinforced concrete crown beam sets up reinforced concrete board support respectively, the inside wall of steel sheet pile sets up pipe jacking backrest wall body, and the pipe jacking machine is closely attached to the pipe jacking backrest wall body, and the drive end of pipe jacking machine is connected with the pipe that is to be jacked in the pipe jacking working well, and pipe jacking machine can top into the lateral wall of pipe jacking working well with the pipe that is to be jacked.

[0005] The utility model has the advantages that the steel sheet pile support's pipe jacking working well structure of the utility model can form stable support structure through setting up the steel sheet pile on the four around sides of pipe jacking working well, and cooperate with the reinforced concrete crown beam and reinforced concrete board support on the top, can play the stable support isolation effect through setting up the pipe jacking backrest wall body, guarantees the pipe jacking machine to top into the pipe that is to be jacked smoothly, and the construction speed is fast, saves the engineering cost, the steel sheet pile top adopts the reinforced concrete crown beam connection, improves the overall stability of the enclosure structure, replaces the traditional steel support with the reinforced concrete board support, avoids the support to fall off, ensures the safety of construction, the steel sheet pile adopts the setting mode of staggered high-low piles, avoids the steel bar to directly pass through the steel sheet pile, and facilitates the binding operation of the reinforced concrete crown beam steel bar.

[0006] On the basis of the above technical scheme, the utility model can also be improved as follows:

[0007] Further, the steel sheet pile is a U-shaped steel sheet pile, and the steel sheet pile comprises high-position piles and low-position piles, and the high-position piles and the low-position piles are alternately arranged around the side walls of the pipe jacking working well.

[0008] The beneficial effect of the above further scheme is that, by alternately arranging the high-position piles and the low-position piles around the side walls of the pipe jacking working well, the reinforcement of the reinforced concrete corbel is prevented from directly penetrating through the steel sheet pile, and the binding operation of the reinforcement of the reinforced concrete corbel is facilitated,

[0009] Further, the height difference of the pile top of the high-position pile and the low-position pile is 0.3-0.5m.

[0010] Further, the reinforced concrete corbel at the top of the high-position pile comprises main reinforcement and side stirrups, and the main reinforcement and the side stirrups are located on both sides of the steel sheet pile, and the main reinforcement and the side stirrups are bound to each other and then the high-position pile is formed by pouring concrete.

[0011] The reinforced concrete corbel at the top of the low-position pile comprises main reinforcement, side stirrups and upper stirrups, the main reinforcement and the side stirrups are located on both sides of the steel sheet pile, and the upper stirrups are located at the upper part of the low-position pile and transversely penetrate the reinforced concrete corbel, and the main reinforcement, the side stirrups and the upper stirrups are bound to each other and then the low-position pile is formed by pouring concrete.

[0012] The beneficial effect of the above further scheme is that, by binding the main reinforcement, the side stirrups and the upper stirrups to each other, a stable framework can be formed, and then the reinforced concrete corbel is formed by pouring concrete, so as to ensure the structural stability of the entire reinforced concrete corbel and ensure the stable connection of the reinforced concrete corbel with the high-position pile and the low-position pile respectively.

[0013] Further, the reinforced concrete bracing is connected with the main reinforcement, the side stirrups and / or the upper stirrups in the reinforced concrete corbel.

[0014] The beneficial effect of the above further scheme is that, by connecting the reinforced concrete bracing with the main reinforcement, the side stirrups and / or the upper stirrups in the reinforced concrete corbel, the connection between the reinforced concrete bracings of the reinforced concrete corbel can be ensured to be stable, so that the reinforced concrete bracings of the reinforced concrete corbel around form a stable whole, and the normal operation in the pipe jacking working well is ensured.

[0015] Further, the reinforced concrete corbel is arranged along a common center axis with the corresponding steel sheet pile, and the two sides of the reinforced concrete corbel are respectively wider than the corresponding steel sheet pile by not less than 0.2m.

[0016] The beneficial effect of the further scheme is that the steel reinforced concrete crown beam is arranged on the common central axis of the corresponding steel sheet pile, so that the steel reinforced concrete crown beam is stably supported, and the two sides of the steel reinforced concrete crown beam are respectively widened to the corresponding steel sheet pile, so that the steel reinforced concrete crown beam can better support the steel reinforced concrete plate.

[0017] Further, the backrest wall body behind the pipe jacking is a reinforced concrete structure.

[0018] The beneficial effect of the further scheme is that the backrest wall body behind the pipe jacking is a reinforced concrete structure, which can effectively support the pipe jacking machine, so that the pipe jacking machine can smoothly jacking the pipe to be jacked. BRIEF DESCRIPTION OF DRAWINGS

[0019] Figure 1 FIG. 1 is a cross-sectional structure schematic diagram of a steel sheet pile supporting pipe jacking working well structure according to an embodiment of the present application;

[0020] Figure 2 FIG. 2 is a plan structure schematic diagram of a steel sheet pile supporting pipe jacking working well structure according to an embodiment of the present application;

[0021] Figure 3 FIG. 3 is a steel sheet pile elevation schematic diagram of a steel sheet pile supporting pipe jacking working well structure according to an embodiment of the present application;

[0022] Figure 4 FIG. 4 is a steel reinforced concrete crown beam reinforcement schematic diagram at a high pile of a steel sheet pile supporting pipe jacking working well structure according to an embodiment of the present application;

[0023] Figure 5 FIG. 5 is a steel reinforced concrete crown beam reinforcement schematic diagram at a low pile of a steel sheet pile supporting pipe jacking working well structure according to an embodiment of the present application.

[0024] In the drawings, the components represented by the numbers are listed as follows:

[0025] 0, pipe jacking working well, 1, steel sheet pile, 2, steel reinforced concrete crown beam, 3, steel reinforced concrete plate support, 4, backrest wall body behind pipe jacking, 5, pipe jacking machine, 6, pipe to be jacked, 7, main reinforcement, 8, side stirrup, 9, upper stirrup. DETAILED DESCRIPTION

[0026] The principles and characteristics of the present application are described below in combination with the drawings, and the examples are only used to explain the present application, and are not used to limit the scope of the present application.

[0027] As Figures 1 to 5As shown, a kind of steel sheet pile support's pipe jacking working well structure, including the steel sheet pile 1 being set around the side wall of pipe jacking working well 0, the top of the steel sheet pile 1 is provided with reinforced concrete crown beam 2, four corners formed by the reinforced concrete crown beam 2 are provided with reinforced concrete plate brace 3 respectively, the inside wall of the steel sheet pile 1 is provided with pipe jacking backrest wall body 4, pipe jacking machine 5 is closely attached to the pipe jacking backrest wall body 4, and the driving end of the pipe jacking machine 5 is connected with the pipe to be jacked 6 placed in the pipe jacking working well 0, and the pipe jacking machine 5 can be jacked into the side wall of the pipe jacking working well 0.

[0028] The steel sheet pile support's pipe jacking working well structure of the utility model, by being provided with steel sheet pile 1 in the side wall of pipe jacking working well 0, then cooperate with the reinforced concrete crown beam 2 and reinforced concrete plate brace 3 of top, can form stable support structure, by being provided with the pipe jacking backrest wall body 4, can play the stable support isolation effect, guarantee the pipe jacking machine 5 and be smoothly jacked into the pipe to be jacked 6, construction speed is fast, saves engineering cost, the top of steel sheet pile is connected with reinforced concrete crown beam, improves the overall stability of enclosure structure, uses reinforced concrete plate brace to replace traditional steel support, avoids support to fall off, ensures the safety of construction, steel sheet pile uses the setting mode of staggered high-low piles, avoids the steel bar directly through steel sheet pile, facilitates the binding operation of reinforced concrete crown beam steel bar.

[0029] It needs to be specially pointed out that, in actual, the planar dimension of pipe jacking working well 0 is determined according to the size of pipe jacking machine 5 and the construction space required by pipe to be jacked 6.

[0030] In one or more embodiments of the utility model, the steel sheet pile 1 is a U-shaped steel sheet pile, and the steel sheet pile 1 includes high-position piles 1-1 and low-position piles 1-2, which are alternately arranged around the side wall of the pipe jacking working well 0. By alternately arranging high-position piles 1-1 and low-position piles 1-2 around the side wall of the pipe jacking working well 0, the steel bars of the reinforced concrete crown beam 2 are prevented from directly penetrating through the steel sheet pile 1, facilitating the binding operation of the steel bars of the reinforced concrete crown beam 2,

[0031] Alternatively, in one or more embodiments of the utility model, the height difference of the pile top of the high-position piles 1-1 and the low-position piles 1-2 is 0.3-0.5 m. Preferably, the height difference of the pile top of the high-position piles 1-1 and the low-position piles 1-2 is 0.4 m.

[0032] In one or more embodiments of the utility model, the reinforced concrete crown beam 2 at the top of the high-position piles 1-1 includes main reinforcement 7 and side stirrups 8, which are located on both sides of the steel sheet pile 1, and the main reinforcement 7 and the side stirrups 8 are bound to each other and then formed into the high-position piles 1-1 by pouring concrete;

[0033] The reinforced concrete crown beam 2 at the top of the low pile 1-2 comprises main reinforcement 7, side stirrups 8 and upper stirrups 9, the main reinforcement 7 and the side stirrups 8 are located on both sides of the steel sheet pile 1, the upper stirrups 9 are located at the upper part of the low pile 1-2 and transversely penetrate the reinforced concrete crown beam 2, and the main reinforcement 7, the side stirrups 8 and the upper stirrups 9 are bound together and then poured with concrete to form the low pile 1-2.

[0034] By binding the main reinforcement 7, the side stirrups 8 and the upper stirrups 9 together, a stable framework is formed, and then the reinforced concrete crown beam 2 is formed by pouring concrete, so that the structure of the entire reinforced concrete crown beam 2 is stable, and the reinforced concrete crown beam 2 is connected to the high pile 1-1 and the low pile 1-2 stably.

[0035] In one or more embodiments of the utility model, the reinforced concrete plate brace 3 is connected with the main reinforcement 7, the side stirrups 8 and / or the upper stirrups 9 in the reinforced concrete crown beam 2.

[0036] The reinforced concrete plate brace 3 is connected with the main reinforcement 7, the side stirrups 8 and / or the upper stirrups 9 in the reinforced concrete crown beam 2, so that the connection between the reinforced concrete plate braces 3 of the reinforced concrete crown beam 2 is stable, so that the reinforced concrete plate braces 3 of the reinforced concrete crown beam 2 around form a stable whole, and normal operation in the pipe jacking working well 0 is ensured.

[0037] In one or more embodiments of the utility model, the reinforced concrete crown beam 2 is arranged along the common central axis of the corresponding steel sheet pile 1, and the two sides of the reinforced concrete crown beam 2 are respectively widened by not less than 0.2m than the corresponding steel sheet pile 1. By arranging the reinforced concrete crown beam 2 along the common central axis of the corresponding steel sheet pile 1, the reinforced concrete crown beam 2 can be stably supported, and by respectively widening the two sides of the reinforced concrete crown beam 2 than the corresponding steel sheet pile 1, the reinforced concrete crown beam 2 can better fix and support the reinforced concrete plate brace 3.

[0038] In addition, the height of the reinforced concrete crown beam 2 is generally greater than 0.8m, and the top elevation of the reinforced concrete crown beam 2 is higher than the top elevation of the high pile 1-1 by not less than 0.1m, and the width of the reinforced concrete crown beam 2 is generally greater than 0.8m.

[0039] The utility model discloses a steel sheet pile supporting's pipe jacking working well structure, and the specific construction includes the following steps:

[0040] ①Field flat, positioning, staggered construction high pile 1-1 and low pile 1-2;

[0041] ②Binding steel reinforcement concrete crown beam 2 and steel reinforcement concrete plate support 3 steel, including main reinforcement 7, side hoop 8 and upper hoop 9;

[0042] ③After the steel reinforcement concrete crown beam 2 and steel reinforcement concrete plate support 3 structure strength reaches the design strength, excavate the soil body in the range of the pipe jacking working well 0;

[0043] ④After the soil excavation reaches the design elevation, construct the pipe jacking backrest wall 4;

[0044] ⑤After the pipe jacking backrest wall 4 structure strength reaches the design strength, install the pipe jacking machine 5;

[0045] ⑥Hoist the intended pipe jacking pipeline 6 into the pipe jacking working well 0;

[0046] ⑦Cut the steel sheet pile 1 corresponding to the intended pipe jacking range of the intended pipe jacking pipeline 6;

[0047] ⑧Start pipe jacking.

[0048] The above only describes the preferred embodiments of the present application, and is not used to limit the present application, and any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present application shall be included in the protection scope of the present application.

Claims

1. A steel sheet pile supported pipe jacking shaft structure, characterized by: The utility model provides a kind of steel sheet pile (1) including being arranged around the side wall of the top pipe working well (0), the top of the steel sheet pile (1) is arranged reinforced concrete crown beam (2), four corners formed by the reinforced concrete crown beam (2) are arranged reinforced concrete plate brace (3) respectively, the inside wall of the steel sheet pile (1) is arranged top pipe backrest wall body (4), top pipe machine (5) is attached to the top pipe backrest wall body (4), and the driving end of the top pipe machine (5) is connected with the top pipe pipe (6) placed in the top pipe working well (0), and the top pipe machine (5) can be top into the side wall of the top pipe working well (0) by the top pipe pipe (6).

2. The steel sheet pile supported pipe jacking shaft structure according to claim 1, characterized by: The steel sheet pile (1) is a U-shaped steel sheet pile, and the steel sheet pile (1) includes high piles (1-1) and low piles (1-2), which are alternately arranged around the side wall of the top pipe working well (0).

3. The steel sheet pile supported pipe jacking shaft structure according to claim 2, characterized by: The high piles (1-1) and the low piles (1-2) have a height difference of 0.3-0.5m at the top of the piles.

4. The steel sheet pile supported pipe jacking shaft structure according to claim 2, characterized by: The reinforced concrete crown beam (2) at the top of the high piles (1-1) includes main reinforcement (7) and side stirrups (8), the main reinforcement (7) and the side stirrups (8) are located on both sides of the steel sheet pile (1), and the main reinforcement (7) and the side stirrups (8) are bound to each other and then formed into the high piles (1-1) by pouring concrete. The reinforced concrete crown beam (2) at the top of the low piles (1-2) includes main reinforcement (7), side stirrups (8) and upper stirrups (9), the main reinforcement (7) and the side stirrups (8) are located on both sides of the steel sheet pile (1), the upper stirrups (9) are located at the upper part of the low piles (1-2) and transversely penetrate the reinforced concrete crown beam (2), the main reinforcement (7), the side stirrups (8) and the upper stirrups (9) are bound to each other and then formed into the low piles (1-2) by pouring concrete.

5. The steel sheet pile supported pipe jacking shaft structure according to claim 4, characterized by: The reinforced concrete plate brace (3) is connected with the main reinforcement (7), the side stirrups (8) and / or the upper stirrups (9) in the reinforced concrete crown beam (2).

6. The steel sheet pile supported pipe jacking shaft structure according to claim 1, characterized by: The reinforced concrete crown beam (2) is arranged along the common central axis of the corresponding steel sheet pile (1), and the two sides of the reinforced concrete crown beam (2) are wider than the corresponding steel sheet pile (1) by no less than 0.2m.

7. The steel sheet pile supported pipe jacking shaft structure according to any one of claims 1 to 6, characterized by: The top pipe backrest wall body (4) is a reinforced concrete structure.

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